Staging-support



M. F. SYKES.

STAGING SUPPORT.

APPLICATION, man "n.4, 1'919.

Patented Nov. 1, 1921'.v

' INVENTOR.

BY ATT'0RNEY.

UNITED STATES PATENT QFFKIE.

MARTIN IF. SYKES, OFLAWRENCE, MASSACHUSETTS.

STAGING-SUPPORT.

Application filed April 4,

1 0 all whom it may concern:

Be it known that I, MARTIN F. SYKns, a citizen of the United States,residing at Lawrence, in the county of Essex and State of Massachusetts,have invented certain new and useful Improvements in Staging Supports,of which the following is a specifica tion.

This invention relates to staging supports adapted to be quicklyfastened in place on round columns or posts without injuring them. It isarranged so that itcan be adj usted within wide limits and, whensubstantially adjusted, can be put in place and rigidly clamped so thatit will not slip down on a cylindrical column or post.

It is particularly useful for supporting the beams of a staging such asused by plasterers, painters, etc., but may also be used for supportingtackle of various kinds, or as a hanger to which tackle may be attached,for lifting heavy columns, posts, etc.

In the drawing, Figure 1 shows in perspective my device clamped to acolumn, the column being shown as cut off clean and broken away to moreclearly show my device. Fig. 2 is a horizontal sectional view of theclamping member P.

In Fig. l, C represents a column or post which is shown as being round,but it is manifest that my device can be attached to columns which areoctagonal, hexagonal, or even rectangular.

In Fig. 1 of the drawings, A represents a rigid vertical base platewhich is preferably fiat or slightly curved vertically on the inside. Brepresents a cross piece which extends'in both directions and isattached to the top thereof in any suitable manner. It may be madeintegral to the base plate or may be attached thereto by rivets, screws,bolts or brazing.

H is an outwardly extending supporting arm attached to the base plate atthe top in any suitable manner. This also may be in tegral with the baseplate or may be rigidly fastened thereto by means of rivets, bolts,screws or brazing. It is shown as of such form as to allow the stagingcarrying beam F to rest comfortably thereon.

As shown in Fig. 1, the ends 7 and 8 of cross piece B are formed likethe leaves of a butt hinge, and interlocking therewith are the ends 11and 21 of the hinged members 12 and 22 which are pivoted thereto bymeans of Specification of Letters Patent.

Patented Nov. 1, 1921.

1919. Serial No. 287,565.

the headed hingejpins 10 and 20. These hinge pllls may be removable.

The free end of hinged member 22 is shown.

as formed with a slot 24 and like a butt leaf to receive a pin 25, whichmay be headed or otherwise, and which passes through a suitable pinhole40 in the end link of a flexible member shown as chain M.

The free end 13 of hinged member 12 is bent outwardly and has anopen-ended slot 14.

For the purpose of clamping the device in place, 1 use screw operativetightening means, shown in Fig. 1 as a bolt F, of such size as to passinto slot 14 and carrying a nut 43 by which it may be tightened. Bolt Fhas a loop 42 through which chain M passes, whereby the flexible memberM connects the end of hinged member 22, which may be considered as anextension of one end of cross piece B, with hinged member 12, which maybe considered the end or an extension of the other end of cross piece B.

I prefer to use for a flexible member a chain, such as M, having links 6shaped like a figure 8 which will fit into each other when the free endof the chain is pulled through the loop 42 and doubled back on itselffor tightening or loosening, as shown in Fig. 2.

For a clamping member to hold the flexible member M in adjustedposition, I show a clamp P having members 50 and 51 with two tighteningbolts 52 whereby the doubled chain may be passed through and held in position. After being so adjusted, the bolt 1* can be slipped into slot 14and the whole device rigidly clamped in position by screwing up nut 43.

It will be seen that the flexible member, being attached to the crosspiece located at the top of the base plate, when tightened up will holdthe parts rigidly in position, and any tendency to slip down iscounteracted by the weight of the staging carried by beam F on arm Hwhich projects outwardly and has a tendency to force in toward thecolumn the lower end 5 of the base plate. It will also be seen that whenused on the same sizes of columns it is only necessary to loosen up nut43 very slightly to permit bolt F to be slipped out of slot 14 so thatthe whole support can be removed and reattached to another column.

If desired, a ring bolt 9 may be attached preferably near the upper partof the base plate, and used as a hanger for staging or for lifting acolumn to Which my device is clamped while in a horizontal position byor to a cross piece fixed thereto near the top,

adapted to extend around a column or similar support and to connect bymeans of a screw operative tightening member with the other side of thebase plate or cross piece. Preferably, one end of the flexible membershould be so attached that the slack can be taken up to fit it roughlyto the column which supports it and so that the other end can be quicklytightened and held, thereby clamping the Whole device in place.

I claim:

In a staging support, the combination of a rigid vertical base plate, across piece fiXecl' to the top thereof, and an outwardly extending'supporting arm fixed thereto, With a hinged member pivoted at one end ofthe cross piece, a hinged member having a bent end terminating in anopen slot pivoted at the other end of the cross piece, and a flexiblemember connected at one end to the free end of the first named hingedmember and carrying at its other end a bolt of such size as to entersaid slot, a nut for said bolt, and means to take up and let outthe'flexible member.

In testimony whereof I have afiixed my signature. 7

MARTIN F. SYKES.

